title: Transversal changes in dental arches from non-extraction treatment with self ligating brackets.
abstract: OBJECTIVE
  The present study aimed at analyzing, with the use of dental casts, the transverse changes of the upper and lower dental arches, after non-extraction orthodontic treatment, with self-ligating brackets.
  
  
  METHODS
  The sample comprised 29 patients, all presenting Class I malocclusion with upper and lower crowding of at least 4 mm and treated only with a fixed appliance, without stripping, extraction or distalization. The dental casts were obtained before and after leveling with 0.019 x 0.025-in stainless steel archwires.
  
  
  CONCLUSIONS
  The results indicated that the majority of transverse changes occurred at the premolar areas, both the first and the second, as well as on the upper and lower dental arches. The intercanine distance increased 0.75 mm, on average, in the upper arch and 1.96 mm in the lower arch. The molars also demonstrated a tendency towards an increase in their transverse dimension, however, at a lower intensity comparing to premolars. All measurements presented statistically significant differences with the exception of the maxillary second molars.
authors.forename: Liliana Avila
authors.initials: LA
authors.lastname: Maltagliati
authors.forename: Yasushi Inoue
authors.initials: YI
authors.lastname: Myiahira
authors.forename: Liana
authors.initials: L
authors.lastname: Fattori
authors.forename: Leopoldino Capelozza
authors.initials: LC
authors.lastname: Filho
authors.forename: Mauricio
authors.initials: M
authors.lastname: Cardoso
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003300:Copper; D003724:Dental Arch / Q000033:anatomy & histology* / Q000473:pathology*; D006801:Humans; D008311:Malocclusion, Angle Class I / Q000628:therapy*; D003765:Models, Dental; D009532:Nickel; D009811:Odontometry; D016382:Orthodontic Appliance Design; D016910:Orthodontic Brackets; D013193:Stainless Steel; D014025:Titanium; D014081:Tooth Extraction; D014087:Tooth Movement Techniques / Q000295:instrumentation*; D055815:Young Adult
chemical_list: C040654:titanium nickelide; D013193:Stainless Steel; D003300:Copper; D009532:Nickel; D014025:Titanium
keywords: Corrective orthodontics; Dental models; Orthodontic brackets